| 摘要 |
PURPOSE:To automatically regulate a parameter regarding a motor merely by the combination of a vector-control inverter and the motor. CONSTITUTION:A counterelectromotive force compensation amount automatic regulator 21 operates a motor 1 in a no load state, and so regulates a compensation amount for counterelectromotive force generated from the motor 1 that a primary current compensation amount in a primary current control loop becomes small. An exciting current automatic regulator 22 detects, after regulation by the regulator 21 is finished, an output voltage of an inverter and so automatically regulates the setting of an exciting current of the motor that the relation of an output voltage to a primary frequency command becomes a predetermined value. A rated slip automatic regulator 23 limits, after the regulation of the regulator 22 is finished, to accelerate the motor 1 from a certain speed to a certain speed, estimates an actual torque value from a speed difference from the accelerating time of the period and inertial moment of the motor 1, obtains characteristics of estimated torque for a torque command value, and so automatically regulates the rated slip of the motor 1 that the characteristics become a predetermined value. |
